/* ------------------------------------------------------------------------ */
jQuery.fn.fadeToggle = function(speed, easing, callback) {
    return this.animate({opacity: 'toggle'}, speed, easing, callback);  
};


/* ------------------------------------------------------------------------ */
$(document).ready(function() {
    $('#link-toggle-content').click(function() {
                    $('#content_wrapper').fadeToggle('fast', function() {
                        var $this = $('#content_wrapper');
                        if ($this.is(':visible')) {
                            $('#link-toggle-content').html('<span>-</span> Hide content');
                        }
                        else {
                            $('#link-toggle-content').html('<span>+</span> Show content');
                        }
                    });
                });
});